Keep politely hounding them for a refund. You'll get it eventually. It took a few weeks for mine if I remember correctly.
I don't think any of these have officially been produced. I think, with Version 1, the one we were all waiting for, they were just going for a money grab so that they could actually build the phone. Version 1 would never be shipped, and those of us who preordered (and didn't get a refund) would eventually just get Version 2, which would be the first produced version of the phone. It's almost as if they were attempting their own, messed up version of a Kickstarter. Ha ha I doubt they're even considering the dual boot option anymore, but who really knows. I just got so tired of the sold out notifications and shipping delays. Their business model was/is just really bad. I was really excited about it for a while, though. But, seeing how they run things, I am fairly confident that support for the device would have been abysmal.